scholarly journals OPA1, the Disease Gene for Autosomal Dominant Optic Atrophy, Is Specifically Expressed in Ganglion Cells and Intrinsic Neurons of the Retina

2004 ◽  
Vol 45 (11) ◽  
pp. 4217 ◽  
Author(s):  
Ulrike E. A. Pesch ◽  
Julia E. Fries ◽  
Stefanie Bette ◽  
Hubert Kalbacher ◽  
Bernd Wissinger ◽  
...  
Keyword(s):  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Disease Gene ◽  
Ganglion Cells ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy ◽  
Intrinsic Neurons

scholarly journals Sustained intracellular calcium rise mediates neuronal mitophagy in models of autosomal dominant optic atrophy

2021 ◽  
Author(s):  
Marta Zaninello ◽  
Konstantinos Palikaras ◽  
Aggeliki Sotiriou ◽  
Nektarios Tavernarakis ◽  
Luca Scorrano
Keyword(s):  
Mitochondrial Dysfunction ◽  
Motor Neurons ◽  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Ganglion Cells ◽  
Mitochondrial Dynamics ◽  
Second Messengers ◽  
Mitochondrial Density ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy

AbstractMitochondrial dysfunction and mitophagy are often hallmarks of neurodegenerative diseases such as autosomal dominant optic atrophy (ADOA) caused by mutations in the key mitochondrial dynamics protein optic atrophy 1 (Opa1). However, the second messengers linking mitochondrial dysfunction to initiation of mitophagy remain poorly characterized. Here, we show in mammalian and nematode neurons that Opa1 mutations trigger Ca2+-dependent mitophagy. Deletion or expression of mutated Opa1 in mouse retinal ganglion cells and Caenorhabditis elegans motor neurons lead to mitochondrial dysfunction, increased cytosolic Ca2+ levels, and decreased axonal mitochondrial density. Chelation of Ca2+ restores mitochondrial density in neuronal processes, neuronal function, and viability. Mechanistically, sustained Ca2+ levels activate calcineurin and AMPK, placed in the same genetic pathway regulating axonal mitochondrial density. Our data reveal that mitophagy in ADOA depends on Ca2+-calcineurin-AMPK signaling cascade.

scholarly journals Mitochondrial Ca2+ uptake correlates with the severity of the symptoms in autosomal dominant optic atrophy

Cell Calcium ◽  
2015 ◽  
Vol 57 (1) ◽  
pp. 49-55 ◽  
Author(s):  
László Fülöp ◽  
Anikó Rajki ◽  
Erika Maka ◽  
Mária Judit Molnár ◽  
András Spät
Keyword(s):  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy

scholarly journals OPA3-Related Autosomal Dominant Optic Atrophy and Cataract with Ataxia and Areflexia

2012 ◽  
Vol 68 (2) ◽  
pp. 108-110 ◽  
Author(s):  
X. Ayrignac ◽  
C. Liauzun ◽  
G. Lenaers ◽  
D. Renard ◽  
P. Amati-Bonneau ◽  
...  
Keyword(s):  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy

scholarly journals Autosomal dominant optic atrophy: A novel treatment of OPA1 splice defects by U1 snRNA adaption

2021 ◽  
Author(s):  
Christoph Jüschke ◽  
Thomas Klopstock ◽  
Claudia B. Catarino ◽  
Marta Owczarek-Lipska ◽  
Bernd Wissinger ◽  
...  
Keyword(s):  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy ◽  
Novel Treatment ◽  
U1 Snrna

scholarly journals A splice site mutation in the murine Opa1 gene features pathology of autosomal dominant optic atrophy

Brain ◽  
2006 ◽  
Vol 130 (4) ◽  
pp. 1029-1042 ◽  
Author(s):  
M. V. Alavi ◽  
S. Bette ◽  
S. Schimpf ◽  
F. Schuettauf ◽  
U. Schraermeyer ◽  
...  
Keyword(s):  
Splice Site ◽  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Splice Site Mutation ◽  
Site Mutation ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy ◽  
Opa1 Gene

Autosomal Dominant Optic Atrophy

2019 ◽  
pp. 29-34
Author(s):  
Matthew J. Thurtell ◽  
Robert L. Tomsak
Keyword(s):  
Differential Diagnosis ◽  
Optic Atrophy ◽  
Autosomal Dominant ◽  
Spastic Paraparesis ◽  
Progressive External Ophthalmoplegia ◽  
Management Approach ◽  
Chronic Progressive External Ophthalmoplegia ◽  
Autosomal Dominant Optic Atrophy ◽  
Dominant Optic Atrophy ◽  
History Of

There is a broad differential diagnosis for bilateral optic neuropathies, including inflammatory, ischemic, compressive, traumatic, nutritional, toxic, and inherited causes. In this chapter, we begin by discussing the approach to the patient who has bilateral symmetric optic neuropathies. We next review the genetic basis, clinical features, and natural history of autosomal dominant optic atrophy. We list other deficits that can occur in up to 20% of patients with this condition, which can include sensorineural hearing loss, ataxia, myopathy, peripheral neuropathy, spastic paraparesis, and chronic progressive external ophthalmoplegia. Lastly, we discuss the evaluation and management approach for autosomal dominant optic atrophy.

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